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온라인 음악 사이트의 서비스품질이 고객만족에 미치는 영향 연구
유지연(Yoo jiyun),박정배(Park jungbae) 한국예술경영학회 2008 예술경영연구 Vol.13 No.-
The advance of Internet and the introduction of MP3 digital file have brought the change in consumers’ music consumption patterns and also led to the dramatic change in its value chain throughout musical contents’ production, distribution, marketing and consumption, which has eventually changed the overall music industry paradigm. However, although this new MP3 download and streaming services provide diverse advantages by remarkably reducing the reproduction and distribution cost, it has caused the copyright infringement disputes and has acted as one of main reasons to explain the overall music market depression. Few researches have conducted to develop a valid and reliable set of measures for assessing consumer perception of free contents. This study is designed to examine online music sites because it is considered that digital technology development has more remarkably influenced on the music industry than any other industries, and there has been a huge impact on the change of consumers’ behavior and perception due to the free online sites. The purpose of this study is to investigate the relative effects of each digital contents service quality on customer satisfaction and to provide differentiated strategic implications to marketers by comparing the impacts of each service dimension between paid and free music sites on customer satisfaction. The results of this study were summarized as follows. First, each digital contents service quality shows a significant effect on customer satisfaction both in paid and free online music sites. Especially, among the service quality dimensions, the communication quality in paid online sites shows the most significant effect on customer satisfaction. Second, such customer satisfaction of digital contents service quality also shows a significant effect on re-use intention. Currently, most paid online contents companies have confronted two-sided difficulties: the transform of free online music site users to paid online music site and the retention of existed paid users under the competitive environment among many paid online sites. Therefore, by providing important dimensions of digital service quality between paid and free online sites on customer satisfaction, this study can give the managerial implications to paid online marketers in providing more benefits and satisfaction to paid online users.
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중증 급성 중독 환자에서 급성 신장 손상과 병원 내 사망률을 예측하기 위한 강이온차(Strong Ion Gap)의 중요성
심태진 ( Tae Jin Sim ),조재완 ( Jae Wan Cho ),이미진 ( Mi Jin Lee ),정해원 ( Haewon Jung ),박정배 ( Jungbae Park ),서강석 ( Kang Suk Seo ) 대한임상독성학회 2021 대한임상독성학회지 Vol.19 No.2
Purpose: A high anion gap (AG) is known to be a significant risk factor for serious acid-base imbalances and death in acute poisoning cases. The strong ion difference (SID), or strong ion gap (SIG), has recently been used to predict in-hospital mortality or acute kidney injury (AKI) in patients with systemic inflammatory response syndrome. This study presents a comprehensive acidbase analysis in order to identify the predictive value of the SIG for disease severity in severe poisoning. Methods: A cross-sectional observational study was conducted on acute poisoning patients treated in the emergency intensive care unit (ICU) between December 2015 and November 2020. Initial serum electrolytes, base deficit (BD), AG, SIG, and laboratory parameters were concurrently measured upon hospital arrival and were subsequently used along with Stewart’s approach to acid-base analysis to predict AKI development and in-hospital death. The area under the receiver operating characteristic curve (AUC) and logistic regression analysis were used as statistical tests. Results: Overall, 343 patients who were treated in the intensive care unit were enrolled. The initial levels of lactate, AG, and BD were significantly higher in the AKI group (n=62). Both effective SID [SIDe] (20.3 vs. 26.4 mEq/L, p<0.001) and SIG (20.2 vs. 16.5 mEq/L, p<0.001) were significantly higher in the AKI group; however, the AUC of serum SIDe was 0.842 (95% confidence interval [CI]=0.799-0.879). Serum SIDe had a higher predictive capacity for AKI than initial creatinine (AUC=0.796, 95% CI=0.749-0.837), BD (AUC=0.761, 95% CI=0.712-0.805), and AG (AUC=0.660, 95% CI=0.607-0.711). Multivariate logistic regression analyses revealed that diabetes, lactic acidosis, high SIG, and low SIDe were significant risk factors for in-hospital mortality. Conclusion: Initial SIDe and SIG were identified as useful predictors of AKI and in-hospital mortality in intoxicated patients who were critically ill. Further research is necessary to evaluate the physiological nature of the toxicant or unmeasured anions in such patients.
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